square root of 400by prime factorisation method
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1
Split 400 into prime factors
400 = √2 x 2 x 2 x 2 x 5 x 5
Step 3 :
Inside the radical sign, if the same number is repeated twice, take one number out of the radical sign.
= 2 x 2 x 5
= 20
Hence, square root of 400 is 20.
400 = √2 x 2 x 2 x 2 x 5 x 5
Step 3 :
Inside the radical sign, if the same number is repeated twice, take one number out of the radical sign.
= 2 x 2 x 5
= 20
Hence, square root of 400 is 20.
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Answered by
2
2 400
2 200
2 100
2 50
5 25
5 5
1=2×2×2×2×5×5=2×2×5=20ans
2 200
2 100
2 50
5 25
5 5
1=2×2×2×2×5×5=2×2×5=20ans
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